I get something weird when debugging and terminating the program early :
1)I open my haskell project and switch to the debug perspective.
2)Put breakpoints at relevant places.
3)Menu : Run->Debug
4)In Console window type "main"
5)The code stops at the breakpoint in Main.hs, and there is an -> arrow at breakpoint
6)Then in console window I click red button (Terminate)
7)The -> arrow is still on the breakpoint.
8) In order to get rid of it I have to do : Run->Resume
9)I get an error message. At this point the -> arrow disappears
Thanks
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1)If I do as above until point (5).
2)Menu : Run->Resume then program finishes
3)Now if I type "main" into the console window, program runs without stopping at breakpoint.
Why does program stop at breakpoint first time and not at second time. Clearly I can terminate and start the program again, but this is tedious to do! Thanks
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Sorry, I forgot to deal with these messages. Your first problem I can reproduce, there are actually two things. When you terminate and you're on a breakpoint, we weren't sending all the proper events, hence the arrow stayed in place. Then the resume button cannot be selected, once you terminated, GHCi is killed, so you can just restart a new session.
The second problem I can't reproduce, I always stop at my breakpoint, but there may be things linked to your code, lazy evaluation, etc…
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myadd :: Int -> Int -> Int
myadd a b = a + b
***********************
where the breakpoint is at "myadd a b = a + b". Just to clarify this is what I do :
1)open my haskell project and switch to the debug perspective.
2)Breakpoint at "myadd a b = a + b"
3)Menu : Run->Debug
4)In Console window type "main"
5)Code stops at breakpoint
6)Menu : Run->Resume then program finishes
7)Now if I type "main" into the console window, program runs without stopping at breakpoint.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Note that if I press "Run->Debug" again (before doing the second "main" in the Console) it stops again at the breakpoint. But in the above I did the "Run->Debug" only once.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Hi,
I get something weird when debugging and terminating the program early :
1)I open my haskell project and switch to the debug perspective.
2)Put breakpoints at relevant places.
3)Menu : Run->Debug
4)In Console window type "main"
5)The code stops at the breakpoint in Main.hs, and there is an -> arrow at breakpoint
6)Then in console window I click red button (Terminate)
7)The -> arrow is still on the breakpoint.
8) In order to get rid of it I have to do : Run->Resume
9)I get an error message. At this point the -> arrow disappears
Thanks
I am using eclipse Version: 4.2.0 on windows 7
I have also noticed another thing.
1)If I do as above until point (5).
2)Menu : Run->Resume then program finishes
3)Now if I type "main" into the console window, program runs without stopping at breakpoint.
Why does program stop at breakpoint first time and not at second time. Clearly I can terminate and start the program again, but this is tedious to do! Thanks
Sorry, I forgot to deal with these messages. Your first problem I can reproduce, there are actually two things. When you terminate and you're on a breakpoint, we weren't sending all the proper events, hence the arrow stayed in place. Then the resume button cannot be selected, once you terminated, GHCi is killed, so you can just restart a new session.
The second problem I can't reproduce, I always stop at my breakpoint, but there may be things linked to your code, lazy evaluation, etc…
Hi, the piece of code is :
****************
module Main where
main = print (myadd 2 4)
myadd :: Int -> Int -> Int
myadd a b = a + b
***********************
where the breakpoint is at "myadd a b = a + b". Just to clarify this is what I do :
1)open my haskell project and switch to the debug perspective.
2)Breakpoint at "myadd a b = a + b"
3)Menu : Run->Debug
4)In Console window type "main"
5)Code stops at breakpoint
6)Menu : Run->Resume then program finishes
7)Now if I type "main" into the console window, program runs without stopping at breakpoint.
Note that if I press "Run->Debug" again (before doing the second "main" in the Console) it stops again at the breakpoint. But in the above I did the "Run->Debug" only once.
GHCI does that outside of EclipseFP, nothing to do with me:
d:\dev\haskell\jp-github\runtime-New_configuration\DebugP\src>ghci Main.hs
GHCi, version 7.4.1: http://www.haskell.org/ghc/ :? for help
Loading package ghc-prim … linking … done.
Loading package integer-gmp … linking … done.
Loading package base … linking … done.
Compiling Main ( Main.hs, interpreted )
Ok, modules loaded: Main.
*Main> :b 11
Breakpoint 0 activated at Main.hs:11:1-17
*Main> main
Loading package array-0.4.0.0 … linking … done.
Loading package bytestring-0.9.2.1 … linking … done.
Loading package deepseq-1.3.0.0 … linking … done.
Loading package text-0.11.2.0 … linking … done.
Loading package containers-0.4.2.1 … linking … done.
Loading package tagsoup-0.12.8 … linking … done.
Stopped at Main.hs:11:1-17
_result :: Int = _
*Main> :continue
6
*Main> main
6
Does not stop on the second invocation at the breakpoint…
Aha. Very interesting. Maybe I'll have to trouble someone else about this one!:) Thanks